Locking function; lock screw can adjust the tension to eliminate the gap; solve the light leaking issue under long exposure; which is a double insurance for you
SV220 dual band filter can reduce the light pollution; enhance the contrast when imaging nebulae
Two filter holders; compatible with 1.25-inch and 2-inch filters; plug and play; reducing repeated installations in dark environments
To capture images of celestial objects in urban settings with excessive artificial light, employ a dual-band filter for deep sky photography. This will also allow for capturing clear photos when the moon is at its brightest.
Double pair of magnets; SV226 photographic filters drawer compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient for you to install and use